Apparatus for applying pigments.



PATENTED 'MAY 3, 1904.

C. A. TRIPP. APPARATUS FOR APPLYING PIGMENTS. APPLIOATION FILED JAN. 13. 1902.

N0 MODEL.

ilNTTE Patented May 3, 1904.

CHARLES A. 'IRIII, OF INDIANAPOLIS, INDIANA.

APPARATU$ FOR APPLYING PIGIVIENTS.

SPECIFICATION forming part of Letters Patent No. 758,798, dated May 3, 1904.

A li ati fil d January 13,1902. Serial No. 89,411. (No model.)

- TO I! 7171/0/12 if 'IIb/H/ concern.-

Be it known that I, CHARLES A. TRIPP, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana. have invented a new and useful Apparatus for Applying Pigments, of which the following is a specification.

M y invention relates to an improved method of and means for applying coloring-matter at predetermined points upon any article, especially the application of comminuted substances. such as bronze or other similar metallic pigments applied to an article upon which a "sizing" has been previously applied at predetermined points to form a desired pattern.

It has been heretofore customary where metallic pigments, such as bronze, are to be applied to first print the article with the desired pattern, using a sizing or other suitable ink for the purpose, and then to dust over the first size with the pigment, tinally attempting to brush off all surplus which has not been caught in the size or ink. In treating fibrous materialsuch, for instance, as clothgreat quantities of the pigment become enmeshed in the material beyond the points where the size has been applied. 'Ihismethod is objectionable, both because of the waste of pigment and also because of the consequent uncleanliness of the finished product.

The primary object of the present invention, therefore, is to so apply a pigment that there shall be practically no waste and in such manner that the pigment will only contact with predetermined portions of the article worked upon and in such quantity as to be only sufficient for the immediate impression.

The accompanying drawings illustrate my improved apparatus and method.

Figure 1 is a plan of one form of my device. Fig. 2 is a section on line 2 2 of Fig. 1. Fig. 3 is a perspective of a portion of the stencil. Fig. I is a diagrammatic view showing a method of use with a multicolorprinting press.

In the drawings, 5 indicates a reticulated stencil-base, preferably of wire-gauze, the mesh of which will depend somewhat upon the degree of comminution of the pigment.

Laid upon the gauze is a stencil (3. preferably formed of flexible material, such as paper, pulp, or the like. Portions of the sheet 6 are removed to form the desired pattern and expose correspoiuling portions of the gauze. The stencil-sheet 6 is preferably laid upon the impression side of the gauze so as to form shallow pockets (3, as shown, for thepigment; but this relative arrangement is not absolutely necessary, especially when the pigment is in the form of a dry powder. In order to automatically supply the pigment to the stencil, I provide an open-topped box 7, which is about type-high, and secure the stencil thereto, so that it will form the top thereof. a chamber 8 being thus formed, into which the pigment may be placed. (,lhamber 8 is provided with an extension in which is mounted a plunger 9, urged by spring 10.

In operation a pigment is placed in chamber 8, and plunger 5) exerts sutlicient pressure thereon to force a limited quantity thereof through the uncovered or exposed portions of the reticulated base 5, this quantity being properly confined in the pockets 6 of the stencilsheet. An application of the article to be printed to the impression-surface will result in the picking up of the pigmentcontained in the pockets, after which a fresh supply will be forced into the pockets by plunger 9. My method consists primarily, therefore. in forcing a limited supply of pigment through predetermined portions of a stencil and supplying the article to be printed to the stencil. \Vhen the pigment used is in the form of a dry powder. the method is preferably modified by the preliminary application of a size to the article in a pattern corresponding to the pattern of the stencil. plied by hand, by a similar stencil apparatus, by the use of type or printing-plates, or in any other suitable manner. At present my practice for the application of dry pigments, such as bronze, is to apply the size by one or more of the printing-rolls ll of amulticolor-printing press 12 and place my apparatus upon the reciprocating bed 13.

It will be readily understood that any desired means may be used for forcing the pigment through the stencil and that the support- This size may be ap' ing-box may assume any desired form so as to fit any other apparatusas, for instance, one of the rolls 11without departing from my invention.

I claim as my invention 1. The combination, with a printing-press, of a powder-pigment chamber, a stencil forming the impression-face thereof, and means for bringing the output of the press in successive conjunction with said stencil.

2. The combination with a pigment-chamber, of a stencil-sheet forming the top thereof, a reticulated body placed between the stencil and chamber and extending across the open parts of the stencil, whereby a series of pigment-receiving pockets is formed on the face of the stencil, and means for forcing a pigment through the exposed reticulated portions.

3. The combination with a multicolor-printing press, of a powder-pigment chamber adapted to be carried by one of the impression members of said press other than the first impression member and so as to register with a printing portion of a preceding impression member, a stencil forming the impression-face of said chamber, and means for forcing a powder pigment through the stencil from the chamber.

4. The combination with a multicolor-printing press, of a powder-pigment chamber adapted to be carried by one of theimpression members of said press other than the first impression member and so as to register with a printing portion of a preceding impression memher, a stencil forming the impression-face of said chamber, a reticulated cover extending across the openings of the stencil, and means for forcing a powder pigment through the exposed portions of the reticulated cover.

5. The combination with a multicolor-printing press, of a powder-pigment chamber adapted to be carried by one of the impression members of said press other than the first impression member and so as to register with aprinting portion of a preceding impression mempigment through the exposed portions of the reticulated cover.

6. The combination with a printing-press, of a pigment-chamber adapted to contain a supply of powder pigment to be carried by said press, a stencil forming the impression face of said chamber, a reticulated cover extending across the openings of the stencil, and means for forcing a powder pigment through the exposed portions of the reticulated cover.

7. The combination with a printing-press, of a pigment-chamber adapted to be carried by said press, a stencil forming the impressionface of said chamber, a reticulated cover extending across the openings of the stencil between the stencil and the chamber so as to form pigment-receiving pockets on the impressionface of the stencil, and means for forcing a powder pigment through the exposed portions of the reticulated cover.

8. The combination with a pigment-con taining chamber, of a stencil-sheet forming the top thereof and having formed in its face one or more pigment-receiving pockets, and one or more openings leading through the bottoms of said pockets to the pigment chamber.

9. The combination with a printing-press, of a stencil, means for bringing the output of the press in successive conjunction with said stencil, and means for forcing a powder pigment through the stencil when the output of the press is brought into conjunction therewith.

CHARLES A. TRIPP. 

